Re: Was told this is Drift...
On Wed, Jul 1, 2020 at 09:50 AM, Les Niles wrote:
What kind of guider do you have ¡ª separate guide scope, or OAG? What is the size of that image in degrees? What happens with a single long exposure on the order of 10-30 minutes ¡ª is there a shadow or trails?
Separate guide scope, Les. Size in Degrees? Heck if I know.? I did do a run at the Eagle Nebula, 30 second exposures, End result: Same funny anomaly. 12,000 seconds of data (June Gloom closed me out. LOL!) ? I thought it was kind of odd. ? -- SonnyE (I suggest viewed in full screen)
|
Re: Was told this is Drift...
Hi Sonny,
I try to avoid meridian flips....and if I image through a flip, I label my sub images slightly?differently, and stack them separately.
I can then stitch the two final images together in Photoshop or equivalent, or overlay them.??
To avoid a meridian flip, when the mount, scope, and target permit, I'll start my scope west pointing east but upside down if necessary ....that is counterweights above the scope center.? Then the object is tracked through the meridian, and into the West like sunset.? (Not "to infinity and beyond!" as Buzz would say, but maybe 52 million light years or so. )
Have fun with your wonderful equipment!
Michael
Thanks All!
As far as my stacking, I have very little control over it, that I'm aware of, anyway.
The stacking is a part of the Atik Infinity camera software. The only options I have are to delete a questionable image before the next stacks.
What was odd, and is harder to show, is how this odd edge starts to show, then got more and more pronounced. It didn't change it just kept developing.
In the earlier images it doesn't really show, it just developed like a 5 O'clock shadow. LOL!
My initial thoughts was a misalignment in my imaging train, because it was so square.
I use an Orion ED80T CF as my telescope.
A Manual Filter wheel, and typically a Baader Moon and Sky Glow filter for my area light pollution. (Possible suspect, being in the light path. But the filter is round.)
And then the Atik Infinity, with it's software.
I did a run at the Eagle Nebula, and the same anomaly cropped up.
But in the end, I can easily crop this oddness off the image in Post Processing.
I just had this hair-brained idea to see if I could image through the meridian, and bypass any meridian flip.
Starting off, I had no idea I could go to such an extreme. It just kept going, and the reason I stopped was the telescope was approaching the mount. And it was 03:01 Hrs.
Honestly guys, much of this technical stuff is above my current interest and intellect. It kinda makes me dizzy. LOL! ;^)
But if I can crop away the doo-doo, then do my typical minimal Post Processing, I'm OK with that.
Thank You for your well thought out analytics. I will say, getting into this new realm of imaging is interesting to me.
I can sit there grabbing files at 250 second slices (25, 10 second images) and see this "5 O'clock shadow" develop.
But... it pales in comparison to the detail that builds in the details of the image.
Other friends Post Processing my odd ball imaging method.
But, it's because Scott made the RAEXT and shown the RA flip through after extending the RA. (Sans telescope.) That is the only reason I took this zany path.
And the only reason I got this weird result.
But I do things a bit differently anyway.
Thank You for your inputs!
--
SonnyE
(I suggest viewed in full screen)
|
Re: Was told this is Drift...
>>>?Well, OAG's are for reflectors." Like SCT's.
Haha that's super not true. I use oags on all my refractors including the sky 90
On Wed, Jul 1, 2020 at 09:16 AM, Michael Herman wrote:
3. Get an OAG and then the guiding will be on the main scope image...
Funny you should mention that Michael, I did try for an entire month, with 2 different OAG's to make OAG work with my refractor.
Never got it to work. But damn, I sure tried.
Because OAG makes excellent sense. And I really wish it did work with a small refractor. But before I returned the second OAG, I chatted with a rep about OAG's and he told me, "Well, OAG's are for reflectors." Like SCT's.
Made me feel stupid for trying. But hey, I can do stupid very well. LOL!
But, when I finally gave up on OAG, I got an Orion MMAG. in a round about way. I had the camera, then bought the Auto Guider telescope. It was instant success.
So I guess I was stupid after all. LOL!
?
--
SonnyE
(I suggest viewed in full screen)
-- Brian?
Brian Valente portfolio
|
Re: Was told this is Drift...
On Wed, Jul 1, 2020 at 09:16 AM, Michael Herman wrote:
3. Get an OAG and then the guiding will be on the main scope image...
Funny you should mention that Michael, I did try for an entire month, with 2 different OAG's to make OAG work with my refractor. Never got it to work. But damn, I sure tried. Because OAG makes excellent sense. And I really wish it did work with a small refractor. But before I returned the second OAG, I chatted with a rep about OAG's and he told me, "Well, OAG's are for reflectors." Like SCT's. Made me feel stupid for trying. But hey, I can do stupid very well. LOL! But, when I finally gave up on OAG, I got an Orion MMAG. in a round about way. I had the camera, then bought the Auto Guider telescope. It was instant success. So I guess I was stupid after all. LOL! ? -- SonnyE (I suggest viewed in full screen)
|
Re: Was told this is Drift...
Thanks All!
As far as my stacking, I have very little control over it, that I'm aware of, anyway.
The stacking is a part of the Atik Infinity camera software. The only options I have are to delete a questionable image before the next stacks.
What was odd, and is harder to show, is how this odd edge starts to show, then got more and more pronounced. It didn't change it just kept developing.
In the earlier images it doesn't really show, it just developed like a 5 O'clock shadow. LOL!
My initial thoughts was a misalignment in my imaging train, because it was so square.
I use an Orion ED80T CF as my telescope.
A Manual Filter wheel, and typically a Baader Moon and Sky Glow filter for my area light pollution. (Possible suspect, being in the light path. But the filter is round.)
And then the Atik Infinity, with it's software.
I did a run at the Eagle Nebula, and the same anomaly cropped up.
But in the end, I can easily crop this oddness off the image in Post Processing.
I just had this hair-brained idea to see if I could image through the meridian, and bypass any meridian flip.
Starting off, I had no idea I could go to such an extreme. It just kept going, and the reason I stopped was the telescope was approaching the mount. And it was 03:01 Hrs.
Honestly guys, much of this technical stuff is above my current interest and intellect. It kinda makes me dizzy. LOL! ;^)
But if I can crop away the doo-doo, then do my typical minimal Post Processing, I'm OK with that.
Thank You for your well thought out analytics. I will say, getting into this new realm of imaging is interesting to me.
I can sit there grabbing files at 250 second slices (25, 10 second images) and see this "5 O'clock shadow" develop.
But... it pales in comparison to the detail that builds in the details of the image.
Other friends Post Processing my odd ball imaging method.
But, it's because Scott made the RAEXT and shown the RA flip through after extending the RA. (Sans telescope.) That is the only reason I took this zany path.
And the only reason I got this weird result.
But I do things a bit differently anyway.
Thank You for your inputs!
--
SonnyE
(I suggest viewed in full screen)
|
Re: Was told this is Drift...
As the others have said ¨C that looks like drift to me too. ? You can simply get rid of it by using ¡°Intersection¡± mode stacking (DeepSkyStacker for one offers that). ? David ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Sonny Edmonds
Sent: 01 July 2020 17:06
To: [email protected]
Subject: [Losmandy_users_io] Was told this is Drift... ? Is there a way to correct it?
And is it a mechanical thing?
https://www.cloudynights.com/topic/714964-advice-on-this-off-set/?p=10298236
|
Re: Was told this is Drift...
The guide scope and imaging camera don¡¯t need to be pointed in exactly the same direction, if he has an equatorial mount that¡¯s reasonably well-aligned. The size of the border here looks too big to just be due to a small polar mid-alignment.?
The sharp edges are odd. I would expect a slow drift to produce a much more gradual transition. Also, drift should cause the shadow to get wider over time. If it¡¯s just getting more intense, that sounds like something else is going on, maybe an artifact from the alignment and stacking or something weird in the image capture.?
It would be interesting to look at sub stacks, say 200 at a time from the sequence of 1300.?
What kind of guider do you have ¡ª separate guide scope, or OAG? What is the size of that image in degrees? What happens with a single long exposure on the order of 10-30 minutes ¡ª is there a shadow or trails?
toggle quoted message
Show quoted text
On Jul 1, 2020, at 9:17 AM, Michael Herman <mherman346@...> wrote:
? It's not a shadow, it's from your autostacking software.
You must be using a piggyback autoguiding system.? The piggyback scope and autoguider are centered on a spot not exactly the same as your main imaging camera.?
And you are not exactly drift aligned for polar alignment.??
So what happens is this: the autoguider system is keeping it's target in the cross hairs, but the earth will appear to be rotating around a different spot.
You can also have "differential flexure" ,? a fancy name for all the mechanical shift in the mounting of the piggyback scope system.
There are some good solutions to try:
1. Center the autoguider system on the center of your main camera image, if possible.
2. Drift align the mount.? This takes time but the PHD2 program has a nice Drift Align tool...you just use that to make the DEC axis line horizontal.
3. Get an OAG and then the guiding will be on the main scope image...
As you said, you can always crop the final image!
Stay well and have fun,
Michael
Is there a way to correct it?
And is it a mechanical thing?
Really, it isn't so much a bother to me because I simply crop it away.
But the consistency of it is interesting.
I'm operating in a realm I never have before, because my GM811G allows me to image through the meridian.
So this edge shadow is something I've never seen before.
But it is absolutely consistent, and just becomes more prominent with time.
--
SonnyE
(I suggest viewed in full screen)
|
Re: Was told this is Drift...
It's not a shadow, it's from your autostacking software.
You must be using a piggyback autoguiding system.? The piggyback scope and autoguider are centered on a spot not exactly the same as your main imaging camera.?
And you are not exactly drift aligned for polar alignment.??
So what happens is this: the autoguider system is keeping it's target in the cross hairs, but the earth will appear to be rotating around a different spot.
You can also have "differential flexure" ,? a fancy name for all the mechanical shift in the mounting of the piggyback scope system.
There are some good solutions to try:
1. Center the autoguider system on the center of your main camera image, if possible.
2. Drift align the mount.? This takes time but the PHD2 program has a nice Drift Align tool...you just use that to make the DEC axis line horizontal.
3. Get an OAG and then the guiding will be on the main scope image...
As you said, you can always crop the final image!
Stay well and have fun,
Michael
Is there a way to correct it?
And is it a mechanical thing?
Really, it isn't so much a bother to me because I simply crop it away.
But the consistency of it is interesting.
I'm operating in a realm I never have before, because my GM811G allows me to image through the meridian.
So this edge shadow is something I've never seen before.
But it is absolutely consistent, and just becomes more prominent with time.
--
SonnyE
(I suggest viewed in full screen)
|
Was told this is Drift...
Is there a way to correct it?
And is it a mechanical thing?
https://www.cloudynights.com/topic/714964-advice-on-this-off-set/?p=10298236
Really, it isn't so much a bother to me because I simply crop it away.
But the consistency of it is interesting.
I'm operating in a realm I never have before, because my GM811G allows me to image through the meridian.
So this edge shadow is something I've never seen before.
But it is absolutely consistent, and just becomes more prominent with time.
--
SonnyE
(I suggest viewed in full screen)
|
Re: The NEW Losmandy Press Newsletter
On Tue, Jun 30, 2020 at 09:48 AM, Brian Valente wrote:
Hi Sonny
?
which link did you click on? we can check it out
I already deleted it, but there was a link in it, I think to reply. But it only opened a home page on my computer. Not even a Losmandy page. But hey, there may be glitches. ? -- SonnyE (I suggest viewed in full screen)
|
Re: The NEW Losmandy Press Newsletter
Hi John
that sounds like my driveway!?
I hope you'll be able to get back out there and see the night skies
Brian
Thanks Brian, I have a Gemini level 4 that because of health and age has not seen the night sky in about 5 yrs and it is getting hard to haul all the stuff for imaging to a dark sit, because of poor health and age.? Could image from driveway but can only see about 30 degree south with trees on both sides, its a pretty small hole.
-----Original Message-----
From: Brian Valente < bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 3:39 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi John
Thanks for asking - this newsletter is not linked to the usergroup
it's the losmandy newsletter - you can sign up for it at?
?
look on the lefthand side for newsletter sign up, enter your email, and it will send you an email to verify
Brian?
On Tue, Jun 30, 2020 at 12:30 PM John Hobbs via <hobbs_john= [email protected]> wrote:
Brian:
As a member of this group I get most of the emails sent, however, I did not get the email link for this new newsletter and would like to be sure I am receiving it.
-----Original Message-----
From: Brian Valente < bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 12:48 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi Sonny
which link did you click on? we can check it out
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
--
Brian?
Brian Valente
portfolio
--
Brian?
Brian Valente
portfolio
-- Brian?
Brian Valente portfolio
|
Re: The NEW Losmandy Press Newsletter
Thanks Brian, I have a Gemini level 4 that because of health and age has not seen the night sky in about 5 yrs and it is getting hard to haul all the stuff for imaging to a dark sit, because of poor health and age.? Could image from driveway but can only see about 30 degree south with trees on both sides, its a pretty small hole.
John Hobbs
hobbs_john@...
-----Original Message-----
From: Brian Valente <bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 3:39 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi John
Thanks for asking - this newsletter is not linked to the usergroup
it's the losmandy newsletter - you can sign up for it at?
?
look on the lefthand side for newsletter sign up, enter your email, and it will send you an email to verify
Brian?
On Tue, Jun 30, 2020 at 12:30 PM John Hobbs via <hobbs_john= [email protected]> wrote:
Brian:
As a member of this group I get most of the emails sent, however, I did not get the email link for this new newsletter and would like to be sure I am receiving it.
-----Original Message-----
From: Brian Valente < bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 12:48 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi Sonny
which link did you click on? we can check it out
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
--
Brian?
Brian Valente
portfolio
--
Brian?
Brian Valente
portfolio
|
Re: The NEW Losmandy Press Newsletter
I enjoyed it. I thought it was great! I have about decided to swap my mount for some scuba gear. Here in Eastern NC the weather does not cooperate. But I do enjoy reading and learning new stuff here.
Greg. Morris
|
Re: The NEW Losmandy Press Newsletter
Hi John
Thanks for asking - this newsletter is not linked to the usergroup
it's the losmandy newsletter - you can sign up for it at?
?
look on the lefthand side for newsletter sign up, enter your email, and it will send you an email to verify
Brian?
On Tue, Jun 30, 2020 at 12:30 PM John Hobbs via <hobbs_john= [email protected]> wrote:
Brian:
As a member of this group I get most of the emails sent, however, I did not get the email link for this new newsletter and would like to be sure I am receiving it.
-----Original Message-----
From: Brian Valente < bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 12:48 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi Sonny
which link did you click on? we can check it out
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
--
Brian?
Brian Valente
portfolio
-- Brian?
Brian Valente portfolio
|
Re: The NEW Losmandy Press Newsletter
Brian:
As a member of this group I get most of the emails sent, however, I did not get the email link for this new newsletter and would like to be sure I am receiving it.
John Hobbs
hobbs_john@...
-----Original Message-----
From: Brian Valente <bvalente@...>
To: [email protected]
Sent: Tue, Jun 30, 2020 12:48 pm
Subject: Re: [Losmandy_users_io] The NEW Losmandy Press Newsletter
Hi Sonny
which link did you click on? we can check it out
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
--
Brian?
Brian Valente
portfolio
|
Re: The NEW Losmandy Press Newsletter
Hi Sonny
which link did you click on? we can check it out
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
-- Brian?
Brian Valente portfolio
|
Re: The NEW Losmandy Press Newsletter
Thanks Les, i'll pass the feedback along
any and all feedback is welcome. the Newsletter is new for us, and we want it to help you get the most from your Losmandy gear, so any suggestions are welcome! Here or drop me a private mail
Brian
I just wanted to mention, mainly for Brian so he can pass it on,? that I liked the new newsletter. I normally hate spam because I get so much of it, but this just read more like an actual newsletter with good information and I enjoyed it. Keep up the good work.
Les
-- Brian?
Brian Valente portfolio
|
Re: The NEW Losmandy Press Newsletter
Me too!
But the link to reply didn't work...
Bugs to fix, Brian.
--
SonnyE
(I suggest viewed in full screen)
|
The NEW Losmandy Press Newsletter
I just wanted to mention, mainly for Brian so he can pass it on,? that I liked the new newsletter. I normally hate spam because I get so much of it, but this just read more like an actual newsletter with good information and I enjoyed it. Keep up the good work.
Les
|
Re: Gemini 2 Unable to Connect Telescope via Direct Ethernet
Hi Ron,
When I got a new Ethernet to USB adapter for my new Surface Book, I got similar results (a device did show up in the device manager without the warning bang symbol, but the connection did not work properly until I downloaded the ethernet mfgr's specific driver. Windows led me to believe it should have worked with it's built in driver, but it didn't. After loading the latest mfgr driver, the NIC adapter worked perfectly as expected.
Astronut: Just wanted to report on my latest? Desktop PC W10 fix. I downloaded the latest mfgr's driver before using a new Ethernet to USB Adapter. The TAP interfaces were useless. Network Connections and the Ethernet Adapter are illustrated below. Direct Ethernet Connect works just fine now with the? Desktop PC.Thanks to Losmandy users for an informative conversation.? Ron M?
|
Michael Herman
David C. Partridge
Greg